A medical electric drill protection device

Abstract

The embodiment of the present application provides a medical electric drill protection device, and relates to the technical field of surgical instruments, the protection device comprises a sheath and a chuck assembly, the sheath is used for sleeving the outer periphery of the electric drill; the chuck assembly is used for being arranged at the output end of the electric drill, the chuck assembly comprises a clamping part and a sealed bearing, the clamping part is used for clamping a surgical tool at the output end of the electric drill, the sealed bearing has a first connecting part and a second connecting part that can rotate relative to each other, the first connecting part is connected with the clamping part, and the second connecting part is connected with the sheath, so that the chuck assembly and the sheath cooperate to form a structure for covering the electric drill. The embodiment of the present application makes the electric drill body not need to be subjected to high-temperature and high-pressure sterilization again, avoids damage of repeated sterilization to internal precision components of the electric drill, thereby prolonging the service life of the electric drill; the operation waiting time and the wound exposure time caused by temporary sterilization are shortened, and the postoperative infection risk is reduced.

Description

Technical Field

[0001] This invention relates to the field of surgical instrument technology, and in particular to a protective device for a medical electric drill. Background Technology

[0002] Medical drills are commonly used power tools in orthopedic surgery, primarily used to drive surgical instruments such as Kirschner wires, Steinmann wires, or perforated drills for procedures like drilling holes in bones and reaming the medullary canal. According to medical aseptic technique guidelines, medical devices that come into direct contact with the surgical area or its surrounding environment must be sterile to prevent postoperative infection.

[0003] Existing conventional medical drills require high-temperature, high-pressure sterilization of the entire drill body before each use to ensure a sterile environment during surgery. However, the drill contains delicate motors and circuit components, and repeated high-temperature, high-pressure sterilization accelerates component aging, leading to a shortened lifespan. Furthermore, clinical surgeries often require temporary sterilization of the drill, prolonging wound exposure time and increasing the risk of surgical infection. Summary of the Invention

[0004] This invention provides a protective device for a medical electric drill to solve the technical problem that existing medical electric drills require repeated sterilization, resulting in a short service life and a high risk of surgical infection.

[0005] In a first aspect, embodiments of the present invention provide a medical drill protection device, the protection device comprising: Sheath, the sheath being fitted over the outer periphery of the electric drill; A chuck assembly is provided at the output end of the electric drill. The chuck assembly includes a clamping part and a sealed bearing. The clamping part is used to clamp a surgical tool at the output end of the electric drill. The sealed bearing has a first connecting part and a second connecting part that are rotatable relative to each other. The first connecting part is connected to the clamping part, and the second connecting part is connected to the sheath, so that the chuck assembly and the sheath cooperate to form a structure for covering the electric drill.

[0006] In some embodiments, the sheath includes: The drill has a soft part and a hard part, wherein the soft part is used to cover the grip part of the drill and the hard part is used to cover the part near the output end of the drill.

[0007] In some embodiments, the second connecting portion is detachably connected to the sheath.

[0008] In some embodiments, The second connecting part is provided with a slot, and the sleeve is provided with a pin that cooperates with the slot. The clamp assembly and the sleeve are detachably connected through the slot and the pin.

[0009] In some embodiments, The pin includes a tapered head and a straight rod portion, with a step formed between the straight rod portion and the tapered head. The slot includes two elastic connecting buckles arranged opposite each other, with the minimum distance between the ends of the two elastic connecting buckles equal to the width of the straight rod portion.

[0010] In some embodiments, the resilient connecting clip is made of plastic.

[0011] In some embodiments, The second connecting part is provided with at least one limiting groove, and the end of the sheath is provided with a limiting protrusion corresponding to each of the limiting grooves.

[0012] In some embodiments, The limiting groove and the limiting protrusion are trapezoidal structures with matching shapes.

[0013] In some embodiments, The clamping part has a clamping hole, and the diameter of the clamping hole is adjustable.

[0014] In some embodiments, it also includes: A chuck adjuster is configured to act on the clamping portion to adjust the diameter of the clamping hole.

[0015] The beneficial effects of the technical solution provided by this invention include: This invention provides a protective device for a medical electric drill. The protective device includes a sheath and a chuck assembly. The sheath is fitted over the outer periphery of the electric drill. The chuck assembly is disposed at the output end of the electric drill and includes a clamping part and a sealed bearing. The clamping part clamps a surgical tool at the output end of the electric drill. The sealed bearing has a first connecting part and a second connecting part that are rotatable relative to each other. The first connecting part is connected to the clamping part, and the second connecting part is connected to the sheath, so that the chuck assembly and the sheath cooperate to form a structure for covering the electric drill. This invention, by fitting a sheath around the outer periphery of the electric drill and cooperating with the chuck assembly to form a structure for covering the electric drill, creates a reliable sterile barrier. This eliminates the need for high-temperature and high-pressure sterilization of the electric drill body, avoiding damage to the precision components inside the drill caused by repeated sterilization, thereby extending the service life of the electric drill. The first connecting part, i.e., the inner ring of the sealed bearing, connects to the clamping part, and the outer ring of the sealed bearing, i.e., the second connecting part, connects to the sheath. When the electric drill is working, the clamping part rotates synchronously with the electric drill, while the sheath connected to the second connecting part remains fixed, ensuring that the sheath does not twist during the operation and has good sealing performance. This isolates the unsterilized electric drill body from the surgical area, shortens the surgical waiting time and wound exposure time caused by temporary sterilization, reduces the risk of postoperative infection, and solves the technical problems of existing medical electric drills that require repeated sterilization, resulting in a short service life and long temporary disinfection waiting time, which increases the risk of surgical infection. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a medical electric drill protection device provided in an embodiment of the present invention; Figure 2 A cross-sectional schematic diagram of the connection between the rigid part and the second connecting part of a medical electric drill protection device provided in an embodiment of the present invention; Figure 3 for Figure 2 Schematic diagram of the structure at point A; Figure 4 A schematic cross-sectional view of a sealed bearing in a medical electric drill protection device provided in an embodiment of the present invention; Figure 5 A schematic diagram of the appearance of a sealed bearing in a medical electric drill protection device provided in an embodiment of the present invention; Figure 6A schematic diagram of the sheath pin end structure of a medical electric drill protection device provided in an embodiment of the present invention; Figure 7 A schematic diagram of a protective sleeve for a medical electric drill according to an embodiment of the present invention; Figure 8 A schematic diagram of a chuck adjuster for a medical electric drill protection device provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the clamping part of a medical electric drill protection device provided in an embodiment of the present invention; Figure label: 1. Sheath; 11. Soft part; 12. Hard part; 13. Pin; 131. Conical head; 132. Straight rod part; 14. Limiting protrusion; 2. Chuck assembly; 21. Clamping part; 211. Clamping hole; 22. Sealed bearing; 221. First connecting part; 222. Second connecting part; 2221. Slot; 2222. Elastic connecting buckle; 2223. Limiting groove; 3. Chuck adjuster; 4. Ties. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention provides a protective device for a medical electric drill to solve the technical problem that existing medical electric drills require repeated sterilization, resulting in a short service life and a high risk of surgical infection.

[0020] See Figure 1 and Figure 4As shown in the figure, an embodiment of the present invention provides a protective device for a medical electric drill. The protective device includes a sheath 1 and a chuck assembly 2. The sheath 1 is used to cover the outer periphery of the electric drill. The chuck assembly 2 is used to be disposed at the output end of the electric drill. The chuck assembly 2 includes a clamping part 21 and a sealed bearing 22. The clamping part 21 is used to clamp surgical tools, such as drill bits, Kirschner wires, and other sterile medical instruments, at the output end of the electric drill through a clamping hole 211 with an adjustable diameter. The clamping part 21 is connected to the electric drill via a connecting rod to achieve synchronous rotation. The sealed bearing 22 has a first connecting part 221 and a second connecting part 222 that are rotatable relative to each other. The first connecting part 221 is connected to the clamping part 21, and the second connecting part 222 is connected to the sheath 1, so that the chuck assembly 2 and the sheath 1 cooperate to form a structure for covering the electric drill. In this embodiment of the invention, a sheath 1 is fitted around the outer periphery of the electric drill and cooperates with the chuck assembly 2 to form a structure for covering the electric drill, creating a reliable sterile barrier. This eliminates the need for high-temperature and high-pressure sterilization of the electric drill body, avoiding damage to the precision components inside the drill caused by repeated sterilization, thereby extending the service life of the electric drill. The first connecting part 221, i.e., the inner ring of the sealed bearing 22, is connected to the clamping part 21, and the outer ring of the sealed bearing 22, i.e., the second connecting part 222, is connected to the sheath 1. When the electric drill is working, the clamping part 21 rotates synchronously with the electric drill, while the sheath 1 connected to the second connecting part 222 remains fixed, ensuring that the sheath 1 does not twist during the operation and has good sealing performance. This isolates the unsterilized electric drill body from the surgical area, shortens the surgical waiting time and wound exposure time caused by temporary sterilization, reduces the risk of postoperative infection, and solves the technical problem of existing medical electric drills having a short service life and a high risk of surgical infection due to repeated sterilization.

[0021] This invention provides a protective device for a medical electric drill. The protective device includes a sheath and a chuck assembly. The sheath, fitted around the drill's periphery and working in conjunction with the chuck assembly, forms a structure that encloses the drill, creating a reliable sterile barrier. This eliminates the need for high-temperature, high-pressure sterilization of the drill body, preventing damage to the drill's internal precision components from repeated sterilization and extending the drill's lifespan. The inner ring of the first connecting part (the inner ring of the sealed bearing) connects to the clamping part, and the outer ring of the sealed bearing (the second connecting part) connects to the sheath. During operation, the clamping part rotates synchronously with the drill, while the sheath connected to the second connecting part remains stationary. This ensures the sheath does not twist during surgery and maintains a good seal, isolating the unsterilized drill body from the surgical area. This shortens the surgical waiting time and wound exposure time caused by temporary sterilization, reducing the risk of postoperative infection and solving the technical problems of existing medical electric drills requiring repeated sterilization, resulting in a short lifespan and a high risk of surgical infection.

[0022] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 1 and Figure 7 As shown, the sheath 1 includes a soft part 11 and a hard part 12. The soft part 11 covers the grip of the electric drill, and the hard part 12 covers the front half of the drill near the output end. In this embodiment, the soft part 11 is made of a flexible material, conforming to the shape of the hand grip, providing a comfortable feel and facilitating operation. The hard part 12 is made of a rigid or semi-rigid material and is located near the output end, tightly fixed to the front half of the drill body. This provides a stable support base for the sealed bearing 22, preventing the sheath 1 from twisting or deforming when the electric drill rotates at high speed. It also isolates the soft part 11 from the drill bit, preventing it from tangling with the soft part structure during use. The bottom of the soft part 11 has an opening, which is secured with the strap 4 to ensure the sealing stability at the connection between the sheath 1 and the chuck assembly 2, guaranteeing the reliability of the sterile barrier.

[0023] As an optional implementation, in one embodiment of the invention, the second connecting portion 222 is detachably connected to the sheath 1. This detachable connection method allows the sheath 1 to be separated from the clamp assembly 2, facilitating rapid assembly of the product before surgery and separation of the used sheath 1 from the reusable clamp assembly 2 after surgery. Furthermore, the sheath 1 can be replaced individually in case of accidental damage, eliminating the need to discard the entire device and improving its practicality.

[0024] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 1 , Figure 2 and Figure 3 As shown, the second connecting part 222 is provided with a slot 2221, and the sleeve 1 is provided with a pin 13 that cooperates with the slot 2221. The chuck assembly 2 and the sleeve 1 are detachably connected through the slot 2221 and the pin 13. This embodiment of the invention achieves quick locking and unlocking between the sleeve 1 and the chuck assembly 2 through the insertion and engagement of the slot 2221 and the pin 13. The operation is simple and quick, and it can withstand a certain axial tensile force and radial torque, improving the stability of the sleeve 1 connection during electric drill operation.

[0025] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 2 and Figure 3As shown, the pin 13 includes a conical head 131 and a straight rod portion 132, with a step formed between the straight rod portion 132 and the conical head 131. The slot 2221 includes two opposing elastic connecting buckles 2222, the minimum distance between the ends of the two elastic connecting buckles 2222 being equal to the width of the straight rod portion 132. In this embodiment, the conical head 131 serves as a guide, facilitating the smooth insertion of the pin 13 into the slot 2221. During insertion, the elastic connecting buckles 2222 are compressed and open. Once the pin 13 is in place, the elastic connecting buckles 2222 return to their original shape and lock the step, achieving automatic locking. Locking can be completed without additional tools, preventing loosening or detachment of the connection due to vibration during surgery, and ensuring the stability of the connection between the sheath 1 and the clamp assembly 2.

[0026] As an optional implementation, in one embodiment of the invention, the elastic connecting buckle 2222 is made of plastic. The plastic material used in this embodiment of the invention has good elasticity and toughness, meeting the requirement of repeated deformation without failure, ensuring the durability of the buckle structure. At the same time, the plastic material is lightweight, which helps reduce the overall weight of the device and lessens the operational burden. Furthermore, medical-grade plastic has good corrosion resistance and biocompatibility, making it suitable for use in medical environments, and it is easy to injection mold, improving production efficiency and facilitating large-scale manufacturing.

[0027] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 4 , Figure 5 and Figure 6 As shown, at least one limiting groove 2223 is provided on the second connecting part 222, and the end of the sheath 1 is provided with a limiting protrusion 14 corresponding to each of the limiting grooves 2223. In this embodiment of the invention, the limiting grooves 2223 and the limiting protrusions 14 cooperate to form a reliable anti-rotation structure. The limiting protrusions 14 are fitted into the limiting grooves 2223, which enhances the stability of the structure, prevents the pins 13 from rotating relative to each other in the slots 2221, avoids wear, and increases service life.

[0028] As an optional implementation, in one embodiment of the invention, the limiting groove 2223 and the limiting protrusion 14 are trapezoidal structures with matching shapes. The trapezoidal structure used in this embodiment facilitates guiding the limiting protrusion 14 to accurately slide into the limiting groove 2223 during assembly, thus improving assembly efficiency.

[0029] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 9As shown, the clamping part 21 has a clamping hole 211, the diameter of which is adjustable. The adjustable clamping hole 211 of this embodiment allows the device to flexibly adapt to surgical tools of different diameters, such as Kirschner wires, Steinmann wires, or drills of different specifications. There is no need to replace the entire chuck assembly 2 according to the tool size; simply adjusting the size of the clamping hole 211 is sufficient to firmly clamp the tool. This improves the versatility and flexibility of the device, reduces preparation time for tool changes during surgery, and meets the diverse needs of various orthopedic surgical scenarios.

[0030] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 8 and Figure 9 As shown, it also includes a chuck adjuster 3, which is configured to act on the clamping part 21 to adjust the diameter of the clamping hole 211. The chuck adjuster 3 of this embodiment provides a convenient and precise adjustment means as a special tool. The contraction and expansion of the clamping part 21 can be controlled by rotating the chuck adjuster 3, enabling rapid clamping and disassembly of surgical tools.

[0031] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0032] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the invention herein.

Claims

1. A protective device for a medical electric drill, characterized in that, include: Sheath (1), the sheath (1) is used to be fitted around the outer periphery of the electric drill; A chuck assembly (2) is provided at the output end of the electric drill. The chuck assembly (2) includes a clamping part (21) and a sealed bearing (22). The clamping part (21) is used to clamp the surgical tool at the output end of the electric drill. The sealed bearing (22) has a first connecting part (221) and a second connecting part (222) that are rotatable relative to each other. The first connecting part (221) is connected to the clamping part (21), and the second connecting part (222) is connected to the sheath (1) so that the chuck assembly (2) and the sheath (1) cooperate to form a structure for covering the electric drill.

2. The medical drill protection device according to claim 1, characterized in that, The sheath (1) includes: The drill has a soft part (11) and a hard part (12), wherein the soft part (11) is used to cover the grip of the drill and the hard part (12) is used to cover the part near the output end of the drill.

3. The medical drill protection device according to claim 1, characterized in that: The second connecting part (222) is detachably connected to the sheath (1).

4. The medical drill protection device according to claim 3, characterized in that: The second connecting part (222) is provided with a slot (2221), and the sleeve (1) is provided with a pin (13) that cooperates with the slot (2221). The clamp assembly (2) and the sleeve (1) are detachably connected through the slot (2221) and the pin (13).

5. The medical drill protection device according to claim 4, characterized in that: The pin (13) includes a tapered head (131) and a straight rod (132), with a step formed between the straight rod (132) and the tapered head (131). The slot (2221) includes two elastic connecting buckles (2222) arranged opposite to each other, and the minimum distance between the ends of the two elastic connecting buckles (2222) is equal to the width of the straight rod (132).

6. The medical drill protection device according to claim 5, characterized in that: The elastic connecting buckle (2222) is made of plastic.

7. The medical drill protection device according to claim 1, characterized in that: The second connecting part (222) is provided with at least one limiting groove (2223), and the end of the sheath (1) is provided with a limiting protrusion (14) corresponding to each of the limiting grooves (2223).

8. The medical drill protection device according to claim 7, characterized in that: The limiting groove (2223) and the limiting protrusion (14) are trapezoidal structures with matching shapes.

9. The medical drill protection device according to claim 1, characterized in that: The clamping part (21) has a clamping hole (211), the diameter of which is adjustable.

10. The medical drill protection device according to claim 9, characterized in that, Also includes: A chuck adjuster (3) is configured to act on the clamping part (21) to adjust the size of the clamping hole (211).

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